Data not record

First, My English is very poor, Maybe I can’t describe my question clear, Sorry for this!
My site use piwik more than one year, (version 1.5)
and normal before September this year,
but now, when I visit our website,
There is no data record,
Everything is OK when I debug the piwik source on my computer.

There is no error report online, and the apache log file same,
When I try to call the url like this:


The server report me the id–2999, Then I refresh again and again, no error! Server report 2999 always, Means there is no data record!
So , I don’t know how to fix this problem! Any suggestions?

please upgrade to latest piwik version, I think the bug should be fixed?